US3457906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for exhaust recycle system
Assignee: Atlantic Richfield Co
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Filing: 1967-08-07
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Granted: 1969-07-29
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Expires: 1987-08-07
Abstract
No abstract record available.
Inventors
- 👤 Harold D Daigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:05
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02D; F02D9/00; F02D9/02; F02D2009/0201; F02D2009/0276; F02M; F02M1/00; F02M26/00; F02M2026/001; F02M2026/004; F02M26/13; F02M26/17; F02M26/19; F02M26/41; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |